Rubber tire for vehicles.



R. J. EVANS. RUBBER TIRE FOR VEHICLES. APPLICATION FILED AuG.14, 191s.

Nov.

Patented RICHARD J. EVANS, OFVFRANKLIN, PENNSYLVANIA.

RUBBER TIRE FOR VEHICLES.

Specification of Letters Patent.

Patented Nov. 19, 1918.

Application led August 14, 1915. Serial No. 45,489.

To all whom it may concern.:

Be it known that I, RICHARD J. EVANS, a citizen of the United States,residing at Franklin in the county of Venango and State of ennsylvania,have invented a newl anduseful Improvement in Rubber Tires for Vehicles,of which the following is a specification.

My invention relates to rubbertires for vehicles and particularly topneumatic tires therefor consisting of an inner air tube and an outerinclosing shoe or casing. Heretofore, such tires or casings haveordinarily been provided with layers ofcanvas or`Y ducking, preferablymade of 'sea island cotton, incorporated with and embedded in the bodyof the rubber tire for the purpose of reinforcement and to some extentto resist punc ture; but tires so constructed have been found to possessvarious objections and disadvantages owing to the natural tendency ofthe canvas or ducking to disintegrate or rot, which is aided in manycases by the injury to the cotton by the heat, steam, sulfur, or othersubstances employed in the vulcanizing operation, and by the access ofwater or moisture thereto when in use.

My present invention is designed to obviate such objections anddisadvantages, and consists in employing in the fabric portion of thecasing, termed the carcass, and as part thereof, preferably theoutermost part, a layer or layers of asbestos in woven or other fabricform which surround the remaining layers of fabric which are composedusually of sea island cotton in Woven or other fabric form. This layeror layers of asbestos fabric protects the sea island cotton or otherfabric from heat, steam, sulfur, or other substances used in thevulcanizing operation, and from scuiiing and rot and moisture when 1nuse.

A further object of the invention is to produce a uncture-proof ornon-punctur able tire, w ich is accomplished by` applying at the treadon the outside of the rubber layer covering the cotton and asbestoscarcass what I shall designate as a breakerstrip composed of wovenasbestos cloth havin'g e brass, copper, or other metal wires runningthrough the centers of the strands composing the same. On the exteriorof this breaker-strip an outer layer of rubber is applied. It will beunderstood that the whole structure is suitably vulcanized into oneconcrete structure.

In the accompanying -drawing forming part "of this specification and inwhich simibroken away with their ends appearing iny section.

VIn the drawing, 2 represents a conventional form of vehicle rim and 3the'rubber shoe or casing held by the same. The shoe or casing 3 iscomposed of a vulcanized rubber body having embedded therein andincorporated therewith a carcass composed preferably of superposedlayers 4 of sea island cotton in woven or other fabric' form havinincorporated therewith and preferably rming the outermost portionthereof a layer or layers 5 of asbestos in woven or other fabric form.The layers of cotton fabric entirely envelop and the layer of asbestosfabric partially envelops the beads 6 of the tire. On the exteriorsurface of the layer of asbestos fabric 5 is applied a layer of rubber7. On the outer surface of this layer of rubber and extending across the.tread portion of the tire is the breaker-strip or puncture-preventinstrip 8, composed of one or more layers o woven asbestos' cloth, having,as before stated, fine brass, co per, or other metal wires 9 runningthrong the centers of the individual strands 10 composing the same. llis the outermost layer of rubber of the tire. 12 is the ordinary innertube of a pneumatic tire. It will be understood that the sea islandcotton portion 4, the asbestos portion 5, and the breaker-strip 8 may becomposed of one, two, three, or as many layers or plies as may be deemedpreferable or desirable. It will also be understood that the parts 4, 5,6, 7, 8, and 9, are suitably vulcanized together to form an integralconcrete unitary structure. y improved tire thus constructed will befound to have many advantages not possessed by the tires now in commonuse. It is much more durable than the ordinary tire, as the asbestosfabric layer on the exterior of the layers of cotton fabric preventsaccess of moisture or other deleterioussubstances to the cotton fabricwhen the tire 1s Vin use, and also protects the cotton fabric frominjury by heat, steam, sulfur, or other tot substances employed in theVulcanizing op eration, the asbestos fabric beingI unaected by saidsubstances and capable of withstanding attack by any material connectedwith the manufacture or use of rubber vehicle tiresB it Will be readilyapparent that rny iinproved tire can be retreaded an `indefinite numberof times Without injury to the saine.

in employing the Word abric in tbe foregoing specication and followingclaims in connection with the cotton and asbestos layers, i do not Wishto be understood as limiting iny invention to cotton and asbestos inWoven forni, as these materials inay be employed in any desired orpreferred Forni? excepting in their loose state.

l. zii. bellow tire having a bead at each oit its innereircuini'ierential edges, in 'combination with a earcass structure tlieinner portion of which is orined of Woven vegetable fabric whichcompletely envelope said beads and the outer portion of which is orinedof Woven asbestos cloth and partially envelope said beads and coverssaid vegetable fabric, and an outer iayer oi rubber, the entirestructure being vulcanized together into a.

J. Giannone C. Emis,

i have hereunto set

